2 in-situ installations of expired black/white photosensitive papers. Once exposed to given light of the Wilhelm-Hack-Museum the different b/w sheets begin a constant chromatic evolution due to their chemicals in dialogue with the surrounding atmosphere of the space of the Museum. CLOUD, 05.09 - 5.11.2017, consists of 50 different b/w papers ranging from 1900 to 1980, of varied formats from 6x9 to 50x60cm. CASCADES, 05.09 - 5.11.2017, is created with a Gevaert 1940 paper roll, given to us by the archivist of the Musée de la Photographie in Charleroi in 2016. The installation is left unfixed. A living process archived and titled : Wilhelm-Hack-Museum's Light, Ludwigshafen, 05.09 - 05.11.2017. Works from Wolfgang Tillmans (Constellations), Max Wolf 19th glas plates neg of astronomical researches, Adrian Sauer (Clouds) are in the same space. Curator Kathrin Schönegg / Head curators Christin Müller and Florian Ebner